“Extensions of Certain Partial Automorphisms of $\mathcal{L}^{\mathcal{ \ast }}(V_{\infty })$” (2009) Annual of Sofia University St. Kliment Ohridski. Faculty of Mathematics and Informatics, 99, pp. 183–191. Available at: https://annual.uni-sofia.bg/index.php/fmi/article/view/121 (Accessed: 4 February 2026).